RESEARCH ON THE APPLICATION OF COAL PETROLOGY IN COKING BLEND

Coal petrologic parameters of coal applied to coking blend and the coal blending method of ΣI-R_r,m-R_r histogram are suggested through experiment using 10kg small-size coke oven and study on the relationship between coal petrologic parameters and coking properties.The results show that a single kind of coal with inertinite 20%~35% and mean random reflectance of vitrinite 1.15%~1.35% is of large coking potential.Adopting the coal blending method of ΣI-R_r,m-R_r histogram,Beijing coke & chemical factory obtains high-grade coke and beneficial economic returm.